Sewing-machine ruffler.



W. R. PARSONS.

SEWING MACHINE RUFFLER.

APPLICATION FILED my a, 1911.

COLUMBIA PLANOOIAPH co..wAsl-||Nu'ruN, D. c.

UNITED STATES PATENT OFFICE.

WINSLOW R. PARSONS, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE GREISTMANUFAC- TURING COMPANY, A CORPORATION OF CONNECTICUT.

SEWING-MACHINE RUFFLER.

Specification of Letters Patent.

Application filed May 8, 1911.

Patented Dec. 19, 1911.

Serial No. 625,831.

Illinois, have invented or discovered certain new and usefulImprovements in Sewing-Machine Rufiiers, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention relates to that class of sewing machine rufliers in whichthe ruffling blades are operated from the needle-bars of the machines insuch a manner that the forward strokes of the ruflling blades areeffected during the upward movements of the operating levers connectedwith the needle bars of the sewing machines, and in which the backwardmovements of the rufliing blades take place during the downwardmovements of the needle-bars. In some sewing machines as now made thetake-ups are so timed as to complete their stitch-tightening movementsafter the needle-bars have commenced their downward movements. In theoperation of sewing machine ruiilers for such machines it is desirablethat the extreme forward throws of the ruffling blades should occursimultaneously with or immediately after the take-ups have completedtheir stitch-tightening movements, and when the needle thread isheldsomewhat taut; as otherwise the ruftling operations cannot be performedin the best manner.

To this end the present invention comprises certain improvements inrufiiers of that class in which the forward strokes of.

movements of the operating levers connected with the needle-bars of themachines, and

the invention has for its object to provide improved means whereby,after the main forward movementilf a rufliing blade has been efiectedduring the upward movement of the operating lever with a sewing machineneedle-bar, a slight additional forward movement may be imparted to therufliing blade during the first part of the downward movement of theoperating lever with the needle-bar, while the backward movement of therutfiing blade will be effected during the last part of the downwardmovement of the operating lever with the needle-bar. By thus changingthe timing of the ruflling blade the miller will be best adapted forcooperation with a sewing machine in which the take-up completes itsstitch-tightening movement after the needle has commenced to descend forthe next succeeding stitch.

The present improvement comprises an additional lever between theoperating lever and the ruflling blade carrier and which additionalleveris so constructed and arranged that after the forward movement ofthe rufliing blade has been mainly effected dur ing the upward movementof the operating lever with the needle-bar of the machine, the saidadditional'lever will be caused to impart a slight, further oradditional forward movement to said ruifling blade during the first partof the downward-movement of the operating lever-with the machineneedlebar, as will hereinafter more fully appear.

In the accompanying drawings Figures 1 and 2 are opposite side views ofa sewing machine rutHer embodying the present invention. Fig. 3 is arear view of the same, and Figs. 4 and 5 are detail views showing theparts to which the present improvement more particularly relates, andwith said parts in different positions.

The present invention is herein shown as being applied to a fivestitchrufller such as that shown and described in the Greist and BeckertPatent No. 983,048, dated Jan. 31, 1911, but it will be understood thatthis invention may be embodied in other kinds of rmllers than thefive-stitch rufiler referred to.

Referring to the drawings, 12 denotes the body of the frame of themiller, and which frame is preferably provided with an integral'attaching portion or shank 13 by which it may be secured to the presserbar of a sewing machine in substitution of an ordinary presser-foot.Theforked operating lever 14 is pivotally mounted on a stud l5 rivetedto an upright portion of the frame 12. Also pivotally mounted on thesaid stud are an oscillating plate 16, a ratchet wheel 17 and apendulous or secondary lever 18, the latter being jointed at its lowerend to the carrier 19 of the ruffling blade 20. The pendulous orsecondary lever 18 is provided at its top with a shoulder 21 to beengaged bya pawl 24 carried by the operating lever 14, said levercarrying a second pawl 23 which may be thrown into engagement with theteethof the ratchet wheel 24 when five-stitch ruftling is to be done,and by ruflie may be made at each stitch of the machine, or at each fivestitches, according to the adjustment of said pawls, as fully describedin the application of Emanuel J. Boyler, No. 601,905, filed Jan. 10,1911.

In the rutfler of Patent No. 983,048, hereinbefore referred to, theentire forward movement of the milling blade is effected during theupward movement of the forked operating lever 14, which is actuated fromthe needle-bar of the sewing machine. In the present improved rutlierthe main part of the forward movement of the rutiiing blade is effectedduring the upward movement of the operating lever 14, but after theupward movement of said lever let with the needle-bar has beencompleted, and when the said lever commences its downward movement withthe needle-bar, an additional forward movement is imparted to theruiiiing blade carrier by means of a lever 25 fulcrumed on a pin 26 andforked at its lower end to embrace the pin 27 by which the pendulouslever 18 is jointed to the ruflling blade carrier 19. The lever 25 isprovided with a slot through which this fulcrum pin 26 passes, and insaid slot, above said pin, is arranged a coil spring 28, thisconstruction permitting of a slight endwise sliding movement of the saidlever 25. The said lever 25 is provided at its upper end with a tooth orcam projection 29 having an abrupt front face, and the hub portion ofthe operating lever 14: is provided with a similar tooth or camprojection 30 having an abrupt rear face.

During the upward movement of the operating lever 14: the cam projection30 on the hub portion of said operating lever rides over the tooth orcam projection 29 on the upper end of the lever 25 depressing said leveragainst the stress of the coil spring 28. When, however, the operatinglever 14 has nearly reached the limit of its upward movement the camprojection 30 thereon passes by the cam projection 29 on the lever 25,so that when the said lever 14: commences its downward movement theabrupt faces of the cam projections 29 and 30 will be in contact, thuscausing the operating lever to impart, through the said lever 25, aslight additional forward movement to the rutliing blade carrier; but assoon as, in the downward movement of the operating lever 14:, the toothor cam projection 30 on said lever passes by the tooth or cam projection29 on the lever 25 the forward movement of the ruftling blade carrierceases and the backward movement thereof is elfected from said operatinglever 14 through the connec tions such as are described in said PatentNo. 983,048, hereinbefore referred to.

From the foregoing it will be apparent that the provision of the lever25 and its operating cam projection 29, in cooperation with the camprojection 30 on the lever 14:, enables the final forward movements ofthe ruiiiing blade to be effected during the first part of the descentof the operating lever 1a with the needle-bar, instead of having saidforward movements fully completed at the upward movements of theneedle-bar, as in similar rutllers heretofore made. From this it resultsthat, in the operation of the improved ruffler, the forwardmovements ofthe ruftling blade will be completed at the time when the needle threadis held taut by the takeup, as hereinbefore stated.

I do not herein claim broadly the combination, in a sewing machinerufller, of an operating lever so connected with the ruffling bladecarrier as to impart a forward movement to said ruflling blade on theupward movement of said operating lever with the needle-bar of themachine, and means for imparting an additional forward movement to saidruifling blade during the first part of the downward movement of saidoperating lever with the needle-bar; as such combination, broadlyconsidered, is the invention of Emanuel J. Boyler and is claimed in hisapplication Serial No. 602,337, filed January 12, 1911, the presentinvention being an improvement upon the rufiler of the said Boylerapplication.

Having thus described my invention I claim and desire to secure byLetters Patent:

1. In a sewing machine ruffler, the combination with an operating leveradapted to be actuated from the needle-bar of a sewing machine, of aruffiing blade, a rufliing blade carrier, means for imparting a forwardmovement to said ruiiiing blade and its carrier during the upwardmovement of the said operating lever, and an auxiliary lever actuatedfrom said operating lever and by means of which the last part of theforward movement of the milling blade may be effected during the firstpart of the downward movements of said operating lever.

2. In a sewing machine ruffler, the combination with an operating leveradapted to be actuated from the needle-bar of a sewing machine, of aruflling blade, a ruftling blade carrier, a pendulous lever actuatedfrom said operating lever and connected with said ruifling blade carrierto impart a forward movement to said carrier and blade during the upwardmovement of said operating lever, an auxiliary lever also connected withsaid ruffiing blade carrier, and opposing teeth or cam projections onsaid auxiliary lever and said operating lever; whereby, during the firstpart of the downward movement of said operating lever, an additionalforward movement will be imparted to said rufliing blade and itscarrier.

3. In a sewing machine ruliier, the combination with an operating leveradapted to be actuated from the needle-bar of a sewing machine, of aruffling blade, a rufiling blade carrier, a pendulous lever actuatedfrom said operating lever and connected with said ruffling blade carrierto impart a forward movement to said carrier and blade during the upwardmovement of said operating 1e-- and said operating lever; whereby,during the first part of the downward movement of said operating lever,an additional forward movement will be imparted to said ruffling bladeand its carrier.

In testimony whereof I aifix my signature, in presence of two Witnesses.

WINSLOW R. PARSONS.

Witnesses:

R. R. MCKINNEY. F. L. LESTER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

